As the magnetic field circuit of the generator, the stator fixes all brushes and leads of the generator. Stator consists of frame, stator core and stator winding. Among them, the frame is usually cast from cast steel or aluminum alloy to support the whole generator; The stator core is made of silicon steel sheet and has good magnetic conductivity. Stator winding is the circuit part of the generator, which is made of insulated wires and usually adopts three-phase winding, that is, star connection or triangle connection.

The role of rotor is to generate rotating magnetic field, which is mainly composed of rotor core, rotor winding and rotating shaft. The rotor core is also made of silicon steel sheet, which has good magnetic permeability and energy; The rotor winding is usually made of copper wire. When the rotor rotates, the magnetic field of copper wire cutting generates current. The rotating shaft is used to support the whole rotor and make it rotate.

In addition, the generator also includes brushes, commutators, bearings, fans and other components. Brush is used to pull current, commutator is used to convert alternating current into direct current, bearing is used to support the whole rotor, and fan is used to dissipate heat.